[!!!][TASK] Replace DataHandler->exclude_array with key-based array

Replace the public property array 'exclude_array' in DataHandler with a
protected property 'excludedTablesAndFields' using keys instead of
values. This change improves performance for bulk inserts since in
DataHandler->fillInFieldArray() many in_array()-checks can be avoided.

Resolves: #63784
Releases: master
Change-Id: I478319fea022c3eceaac35da9c093d1c43ecb2e4
Reviewed-on: http://review.typo3.org/35315


Reviewed-by: Andreas Fernandez <andreas.fernandez@aspedia.de>
Tested-by: Andreas Fernandez <andreas.fernandez@aspedia.de>
Reviewed-by: Markus Klein <klein.t3@reelworx.at>
Tested-by: Markus Klein <klein.t3@reelworx.at>